using System;

using System.Collections.Generic;

public class Program

{

    public static List<TestClass> Tests { get; set; }

    public static TestClass Test { get; set; }

    public static void Main()

    {

        // Check against a null collection

        var am1 = Tests?.Count;

        Console.WriteLine("Is Null: " + (Tests == null));

        Console.WriteLine("Total: " + am1);

        // Check against a hydrated collection

        Tests = new List<TestClass>();

        Tests.Add(new TestClass() { Name = "Chris" });

        var am2 = Tests?.Count;

        Console.WriteLine("Is Null: " + (Tests == null));

        Console.WriteLine("Total: " + am2);

        // Check against a null object

        Console.WriteLine("Name: " + Test?.Name);

        // Check against a not null object

        Test = new TestClass() { Name = "Chris" };

        Console.WriteLine("Name: " + Test?.Name);

    }

    public class TestClass

    {

        public String Name { get; set; }    

    }

}